103
Q&A about the Internet
Q.1
What is a fixed IP address ?
A
Usually, when you connect to the Internet, the provider with which you have contracted
service automatically assigns an IP address which may be different each time you
connect, or may change after a certain length of time.
With this type of changing IP address, it is more difficult for outsiders to illegally enter
your computer. On the other hand, when using your computer or a TR-7W unit as a sever,
it would be necessary to enter a different IP address as the URL each time you wish to
access it. In such a case, it would be necessary to find out the current IP address each
time you wished to access and this would be totally inconvenient.
To help solve this problem, there is something called a fixed IP address service that your
provider can offer.
With a fixed IP address, you will be assigned a special unique IP address.
Some providers may give you a fixed IP address from the beginning of service, but with
most providers it is necessary to sign up for this special service.
Q.2 How do you get a fixed IP address ?
A
A fixed IP address is a service offered by your Internet provider.
For details about how to receive a fixed IP address contact the Internet provider with which
you are connected.
Q.3 How should I set up a fixed IP address ?
A
If you wish to open the TR-7W via the Internet, you must set the fixed IP address to the
router and not to the TR-7W. Because it is impossible, when using normal ADSL or FTTH
lines, to directly connect the TR-7W to the Internet line, it is necessary to place a router
between the logger and the ADSL (FTTH) modem.
When using a router, the fixed Internet IP address should be assigned to the router and all
access to the TR-7W from outside should go through the router. In this case, the router will
have two IP addresses: an external IP address for the Internet and an internal IP address
for the company or household LAN.